sim: testsuite: rework sim_init usage

The sim_init function was called by runtest for each test when --tool
was set to sim.  When we changed to --tool '' to collapse the testsuite
dir, the init function was no longer called on every test.  However, it
was still being called explicitly by config/default.exp.  It's not clear
why that explicit call ever existed since, in the past, it meant it was
redundant.

Lets drop the single sim_init call in config/default.exp and move it out
to all our tests.  This replicates the runtest behavior so we can setup
variables on a per-test basis which allows us to recollapse the sim_path
logic back.  We'll also leverage this in the future for toolchain setup.

Also add a few comments clarifying the overall runtime behavior.

44 files changed, 109 insertions, 26 deletions

diff --git a/sim/testsuite/aarch64/allinsn.exp b/sim/testsuite/aarch64/allinsn.exp
index 54d6478..402d748 100644
--- a/sim/testsuite/aarch64/allinsn.exp
+++ b/sim/testsuite/aarch64/allinsn.exp
@@ -1,5 +1,7 @@
 # AArch64 simulator testsuite
 
+sim_init
+
 if [istarget aarch64*-*] {
     # all machines
     set all_machs "aarch64"
diff --git a/sim/testsuite/arm/allinsn.exp b/sim/testsuite/arm/allinsn.exp
index 4f4f438..ef41c95 100644
--- a/sim/testsuite/arm/allinsn.exp
+++ b/sim/testsuite/arm/allinsn.exp
@@ -1,5 +1,7 @@
 # ARM simulator testsuite.
 
+sim_init
+
 if { [istarget arm*-*-*] } {
     # all machines
     set all_machs "xscale"
diff --git a/sim/testsuite/arm/iwmmxt/iwmmxt.exp b/sim/testsuite/arm/iwmmxt/iwmmxt.exp
index 058e9e6..7283a42 100644
--- a/sim/testsuite/arm/iwmmxt/iwmmxt.exp
+++ b/sim/testsuite/arm/iwmmxt/iwmmxt.exp
@@ -1,5 +1,7 @@
 # Intel(r) Wireless MMX(tm) technology simulator testsuite.
 
+sim_init
+
 if { [istarget arm*-*-*] } {
     # all machines
     set all_machs "xscale"
diff --git a/sim/testsuite/arm/misc.exp b/sim/testsuite/arm/misc.exp
index 818ee58..0b939a6 100644
--- a/sim/testsuite/arm/misc.exp
+++ b/sim/testsuite/arm/misc.exp
@@ -1,5 +1,7 @@
 # Miscellaneous ARM simulator testcases
 
+sim_init
+
 if { [istarget arm*-*-*] } {
     # all machines
     set all_machs "arm7tdmi"
diff --git a/sim/testsuite/arm/thumb/allthumb.exp b/sim/testsuite/arm/thumb/allthumb.exp
index ec09a0d..76aac93 100644
--- a/sim/testsuite/arm/thumb/allthumb.exp
+++ b/sim/testsuite/arm/thumb/allthumb.exp
@@ -1,5 +1,7 @@
 # ARM simulator testsuite.
 
+sim_init
+
 if { [istarget arm*-*-*] } {
     # all machines
     set all_machs "arm7tdmi"
diff --git a/sim/testsuite/arm/xscale/xscale.exp b/sim/testsuite/arm/xscale/xscale.exp
index 394e351..17e99c3 100644
--- a/sim/testsuite/arm/xscale/xscale.exp
+++ b/sim/testsuite/arm/xscale/xscale.exp
@@ -1,5 +1,7 @@
 # XSCALE simulator testsuite.
 
+sim_init
+
 if { [istarget arm*-*-*] } {
     # all machines
     set all_machs "xscale"
diff --git a/sim/testsuite/avr/allinsn.exp b/sim/testsuite/avr/allinsn.exp
index 584a93d..c82610c 100644
--- a/sim/testsuite/avr/allinsn.exp
+++ b/sim/testsuite/avr/allinsn.exp
@@ -1,5 +1,7 @@
 # avr simulator testsuite
 
+sim_init
+
 if [istarget avr-*] {
     # all machines
     set all_machs "avr"
diff --git a/sim/testsuite/bfin/allinsn.exp b/sim/testsuite/bfin/allinsn.exp
index f250d23..d5269da 100644
--- a/sim/testsuite/bfin/allinsn.exp
+++ b/sim/testsuite/bfin/allinsn.exp
@@ -1,5 +1,7 @@
 # Analog Devices Blackfin simulator testsuite
 
+sim_init
+
 if [istarget bfin-*-elf] {
     # all machines
     set all_machs "bfin"
diff --git a/sim/testsuite/bpf/allinsn.exp b/sim/testsuite/bpf/allinsn.exp
index 66e76f6..4f81d4c 100644
--- a/sim/testsuite/bpf/allinsn.exp
+++ b/sim/testsuite/bpf/allinsn.exp
@@ -1,5 +1,7 @@
 # eBPF simulator testsuite
 
+sim_init
+
 if [istarget bpf-unknown-none] {
     # all machines
     set all_machs "bpf"
diff --git a/sim/testsuite/config/default.exp b/sim/testsuite/config/default.exp
index c167e10..d95b554 100644
--- a/sim/testsuite/config/default.exp
+++ b/sim/testsuite/config/default.exp
@@ -1,5 +1,3 @@
 # Simulator default dejagnu configuration file.
 
 load_lib sim-defs.exp
-
-sim_init
diff --git a/sim/testsuite/cr16/allinsn.exp b/sim/testsuite/cr16/allinsn.exp
index 7105a1a..3f05fb9 100644
--- a/sim/testsuite/cr16/allinsn.exp
+++ b/sim/testsuite/cr16/allinsn.exp
@@ -1,5 +1,7 @@
 # CR16 simulator testsuite.
 
+sim_init
+
 if [istarget cr16*-*-*] {
     # all machines
     set all_machs "cr16"
diff --git a/sim/testsuite/cr16/misc.exp b/sim/testsuite/cr16/misc.exp
index bb1bef3..136b0e7 100644
--- a/sim/testsuite/cr16/misc.exp
+++ b/sim/testsuite/cr16/misc.exp
@@ -1,5 +1,7 @@
 # Miscellaneous CR16 simulator testcases
 
+sim_init
+
 if [istarget cr16*-*-*] {
     # all machines
     set all_machs "cr16"
diff --git a/sim/testsuite/cris/asm/asm.exp b/sim/testsuite/cris/asm/asm.exp
index 415bbf1..d64d352 100644
--- a/sim/testsuite/cris/asm/asm.exp
+++ b/sim/testsuite/cris/asm/asm.exp
@@ -15,6 +15,8 @@
 
 # Miscellaneous CRIS simulator testcases in assembly code.
 
+sim_init
+
 if [istarget cris*-*-*] {
     global ASFLAGS_FOR_TARGET
     # All machines we test and the corresponding assembler option.  Needs
diff --git a/sim/testsuite/cris/c/c.exp b/sim/testsuite/cris/c/c.exp
index 25d812ea..08a085d 100644
--- a/sim/testsuite/cris/c/c.exp
+++ b/sim/testsuite/cris/c/c.exp
@@ -15,6 +15,8 @@
 
 # Miscellaneous CRIS simulator testcases testing syscall sequences.
 
+sim_init
+
 if ![istarget cris*-*-*] {
     return
 }
@@ -69,6 +71,7 @@ proc anytarget { targets } {
     return 0
 }
 
+global sim_path
 foreach src [lsort [glob -nocomplain $srcdir/$subdir/*.c]] {
     set orig_ldflags ""
 
@@ -94,7 +97,7 @@ foreach src [lsort [glob -nocomplain $srcdir/$subdir/*.c]] {
 	continue
     }
 
-    if ![file exists [sim_tool_path]] {
+    if ![file exists $sim_path] {
 	untested $testname
 	return 0
     }
diff --git a/sim/testsuite/cris/hw/rv-n-cris/rvc.exp b/sim/testsuite/cris/hw/rv-n-cris/rvc.exp
index 847d906..7c136db 100644
--- a/sim/testsuite/cris/hw/rv-n-cris/rvc.exp
+++ b/sim/testsuite/cris/hw/rv-n-cris/rvc.exp
@@ -16,15 +16,18 @@
 # Miscellaneous CRIS simulator testcases in assembly code, testing
 # dv-rv.c and dv-cris.c functions.
 
+sim_init
+
 # Check whether dv-rv and dv-cris are present.
 
 proc sim_has_rv_and_cris {} {
     global srcdir
     global subdir
     global objdir
+    global sim_path
     global SIMFLAGS_FOR_TARGET
 
-    if ![file exists [sim_tool_path]] {
+    if ![file exists $sim_path] {
 	return 0
     }
 
diff --git a/sim/testsuite/d10v/allinsn.exp b/sim/testsuite/d10v/allinsn.exp
index 5f1a131..6e76196 100644
--- a/sim/testsuite/d10v/allinsn.exp
+++ b/sim/testsuite/d10v/allinsn.exp
@@ -1,5 +1,7 @@
 # d10v simulator testsuite.
 
+sim_init
+
 if [istarget d10v*-*] {
     # all machines
     set all_machs "d10v"
diff --git a/sim/testsuite/example-synacor/allinsn.exp b/sim/testsuite/example-synacor/allinsn.exp
index 4c8f653..2f1fc74 100644
--- a/sim/testsuite/example-synacor/allinsn.exp
+++ b/sim/testsuite/example-synacor/allinsn.exp
@@ -1,5 +1,7 @@
 # Example synacor simulator testsuite.
 
+sim_init
+
 if [istarget *] {
     # All machines.
     set all_machs "example"
diff --git a/sim/testsuite/frv/allinsn.exp b/sim/testsuite/frv/allinsn.exp
index 1781bf0..dea8041 100644
--- a/sim/testsuite/frv/allinsn.exp
+++ b/sim/testsuite/frv/allinsn.exp
@@ -1,5 +1,7 @@
 # FRV simulator testsuite.
 
+sim_init
+
 if [istarget frv*-*] {
     # all machines
     set all_machs "frv fr500 fr550 fr400 fr405 fr450"
diff --git a/sim/testsuite/frv/fr400/allinsn.exp b/sim/testsuite/frv/fr400/allinsn.exp
index 03ccbd6..ed501e5 100644
--- a/sim/testsuite/frv/fr400/allinsn.exp
+++ b/sim/testsuite/frv/fr400/allinsn.exp
@@ -1,5 +1,7 @@
 # FRV simulator testsuite.
 
+sim_init
+
 if [istarget frv*-*] {
     # all machines
     set all_machs "fr400 fr405 fr450 fr550"
diff --git a/sim/testsuite/frv/fr500/allinsn.exp b/sim/testsuite/frv/fr500/allinsn.exp
index fa03797..40d81d9 100644
--- a/sim/testsuite/frv/fr500/allinsn.exp
+++ b/sim/testsuite/frv/fr500/allinsn.exp
@@ -1,5 +1,7 @@
 # FRV simulator testsuite.
 
+sim_init
+
 if [istarget frv*-*] {
     # all machines
     set all_machs "frv fr500 fr550"
diff --git a/sim/testsuite/frv/fr550/allinsn.exp b/sim/testsuite/frv/fr550/allinsn.exp
index c0e373a..91948be 100644
--- a/sim/testsuite/frv/fr550/allinsn.exp
+++ b/sim/testsuite/frv/fr550/allinsn.exp
@@ -1,5 +1,7 @@
 # FRV simulator testsuite.
 
+sim_init
+
 if [istarget frv*-*] {
     # all machines
     set all_machs "fr550"
diff --git a/sim/testsuite/frv/interrupts.exp b/sim/testsuite/frv/interrupts.exp
index 6b2c84a..38c2f41 100644
--- a/sim/testsuite/frv/interrupts.exp
+++ b/sim/testsuite/frv/interrupts.exp
@@ -1,5 +1,7 @@
 # FRV simulator testsuite.
 
+sim_init
+
 if [istarget frv*-*] {
     # all machines
     set all_machs "frv fr500 fr550 fr400"
diff --git a/sim/testsuite/frv/misc.exp b/sim/testsuite/frv/misc.exp
index fb394bb..2025935 100644
--- a/sim/testsuite/frv/misc.exp
+++ b/sim/testsuite/frv/misc.exp
@@ -1,5 +1,7 @@
 # Miscellaneous FRV simulator testcases.
 
+sim_init
+
 if [istarget frv*-*] {
     # all machines
     set all_machs "frv fr500 fr550 fr400 fr405 fr450"
diff --git a/sim/testsuite/frv/parallel.exp b/sim/testsuite/frv/parallel.exp
index 612a1bf..2fcc652 100644
--- a/sim/testsuite/frv/parallel.exp
+++ b/sim/testsuite/frv/parallel.exp
@@ -1,5 +1,7 @@
 # FRV simulator testsuite.
 
+sim_init
+
 if [istarget frv*-*] {
     # all machines
     set all_machs "frv fr500 fr550 fr400"
diff --git a/sim/testsuite/ft32/allinsn.exp b/sim/testsuite/ft32/allinsn.exp
index 730b422..6958f06 100644
--- a/sim/testsuite/ft32/allinsn.exp
+++ b/sim/testsuite/ft32/allinsn.exp
@@ -1,5 +1,7 @@
 # ft32 simulator testsuite
 
+sim_init
+
 if [istarget ft32-*] {
     # all machines
     set all_machs "ft32"
diff --git a/sim/testsuite/h8300/allinsn.exp b/sim/testsuite/h8300/allinsn.exp
index 68468f6..df4d02a 100644
--- a/sim/testsuite/h8300/allinsn.exp
+++ b/sim/testsuite/h8300/allinsn.exp
@@ -1,5 +1,7 @@
 # Hitachi H8/300 (h, s, sx) simulator testsuite
 
+sim_init
+
 if {[istarget h8300*-*-*] || [istarget h8sx*-*-*]} then {
     set all_machs "h8300 h8300h h8300s h8sx"
 
diff --git a/sim/testsuite/iq2000/allinsn.exp b/sim/testsuite/iq2000/allinsn.exp
index 38eee9b..c6a83a0 100644
--- a/sim/testsuite/iq2000/allinsn.exp
+++ b/sim/testsuite/iq2000/allinsn.exp
@@ -1,5 +1,7 @@
 # iq2000 simulator testsuite
 
+sim_init
+
 if [istarget iq2000-*] {
     # all machines
     set all_machs "iq2000"
diff --git a/sim/testsuite/lib/sim-defs.exp b/sim/testsuite/lib/sim-defs.exp
index 405f1b7..46a8b3f 100644
--- a/sim/testsuite/lib/sim-defs.exp
+++ b/sim/testsuite/lib/sim-defs.exp
@@ -7,12 +7,22 @@
 set sim_path "unknown-run"
 
 # Initialize the testrun.
-# Required by dejagnu.
+#
+# Normally dejagnu will execute ${tool}_init automatically, but since we set
+# --tool '' (for a simpler testsuite/ layout), we have each test call this
+# itself.
 
 proc sim_init { args } {
+    global builddir
+    global subdir
     global sim_path
-    set sim_path [board_info target sim]
-    # Need to return an empty string (copied from GAS).
+
+    # Find the path to the simulator for executing.
+    set arch "$subdir"
+    while { [file dirname $arch] != "." } {
+	set arch [file dirname $arch]
+    }
+    set sim_path "$builddir/$arch/run"
 
     # As gross as it is, we unset the linker script specified by the target
     # board.  The simulator board file mips-sim.exp, sets ldscript to the
@@ -23,6 +33,8 @@ proc sim_init { args } {
     # all simulators.
     unset_currtarget_info ldscript
 
+    # Need to return an empty string.  This tells dejagnu to *not* re-run us
+    # with the exact test that we're about to run.
     return ""
 }
 
@@ -35,22 +47,6 @@ proc sim_version {} {
     clone_output "$sim_path $version\n"
 }
 
-# Find the path to the simulator for executing.
-proc sim_tool_path {} {
-    global sim_path
-    set sim "$sim_path"
-    if [string equal "" $sim] {
-	global builddir
-	global subdir
-	set arch "$subdir"
-	while { [file dirname $arch] != "." } {
-	    set arch [file dirname $arch]
-	}
-	return "$builddir/$arch/run"
-    }
-    return "$sim"
-}
-
 # Run a program on the simulator.
 # Required by dejagnu (at least ${tool}_run used to be).
 #
@@ -73,6 +69,8 @@ proc sim_tool_path {} {
 # simulator (not the simulated program, the simulator) with sim_load.
 
 proc sim_run { prog sim_opts prog_opts redir options } {
+    global sim_path
+
     # Set the default value of the timeout.
     # FIXME: The timeout value we actually want is a function of
     # host, target, and testcase.
@@ -99,7 +97,7 @@ proc sim_run { prog sim_opts prog_opts redir options } {
 	
     verbose "testcase timeout is set to $testcase_timeout" 1
 
-    set sim [sim_tool_path]
+    set sim $sim_path
 
     if [is_remote host] {
 	set prog [remote_download host $prog]
@@ -182,13 +180,14 @@ proc sim_run { prog sim_opts prog_opts redir options } {
 
 proc run_sim_test { name requested_machs } {
     global subdir srcdir objdir
+    global sim_path
     global opts
     global cpu_option
     global cpu_option_sep
     global SIMFLAGS_FOR_TARGET
 
-    if ![file exists [sim_tool_path]] {
-	unsupported "$name: missing simulator [sim_tool_path]"
+    if ![file exists $sim_path] {
+	unsupported "$name: missing simulator $sim_path"
 	return
     }
 
diff --git a/sim/testsuite/lm32/allinsn.exp b/sim/testsuite/lm32/allinsn.exp
index 6174498..c3e70b2 100644
--- a/sim/testsuite/lm32/allinsn.exp
+++ b/sim/testsuite/lm32/allinsn.exp
@@ -1,5 +1,7 @@
 # lm32 simulator testsuite
 
+sim_init
+
 if [istarget lm32-*] {
     # all machines
     set all_machs "lm32"
diff --git a/sim/testsuite/m32c/allinsn.exp b/sim/testsuite/m32c/allinsn.exp
index fb5ccca..045cc7e 100644
--- a/sim/testsuite/m32c/allinsn.exp
+++ b/sim/testsuite/m32c/allinsn.exp
@@ -1,6 +1,8 @@
 # M32C simulator testsuite.
 # TODO: Add support for .c tests.
 
+sim_init
+
 if [istarget m32c*-*-*] {
     # all machines
     set all_machs "m32c"
diff --git a/sim/testsuite/m32r/allinsn.exp b/sim/testsuite/m32r/allinsn.exp
index 17a8618..1461134 100644
--- a/sim/testsuite/m32r/allinsn.exp
+++ b/sim/testsuite/m32r/allinsn.exp
@@ -1,5 +1,7 @@
 # M32R simulator testsuite.
 
+sim_init
+
 if [istarget m32r*-*-*] {
     # all machines
     set all_machs "m32r"
diff --git a/sim/testsuite/m32r/misc.exp b/sim/testsuite/m32r/misc.exp
index 6c624e7..d45e119 100644
--- a/sim/testsuite/m32r/misc.exp
+++ b/sim/testsuite/m32r/misc.exp
@@ -1,5 +1,7 @@
 # Miscellaneous M32R simulator testcases
 
+sim_init
+
 if [istarget m32r*-*-*] {
     # all machines
     set all_machs "m32r"
diff --git a/sim/testsuite/m68hc11/allinsn.exp b/sim/testsuite/m68hc11/allinsn.exp
index db0cbd5..710af98 100644
--- a/sim/testsuite/m68hc11/allinsn.exp
+++ b/sim/testsuite/m68hc11/allinsn.exp
@@ -1,5 +1,7 @@
 # m68hc11 simulator testsuite
 
+sim_init
+
 if [istarget m68hc11-*] {
     # all machines
     set all_machs "m68hc11"
diff --git a/sim/testsuite/mcore/allinsn.exp b/sim/testsuite/mcore/allinsn.exp
index 5921cfc..6463ac2 100644
--- a/sim/testsuite/mcore/allinsn.exp
+++ b/sim/testsuite/mcore/allinsn.exp
@@ -1,5 +1,7 @@
 # mcore simulator testsuite
 
+sim_init
+
 if [istarget mcore-*] {
     # all machines
     set all_machs "mcore"
diff --git a/sim/testsuite/microblaze/allinsn.exp b/sim/testsuite/microblaze/allinsn.exp
index f756914..f3662c2 100644
--- a/sim/testsuite/microblaze/allinsn.exp
+++ b/sim/testsuite/microblaze/allinsn.exp
@@ -1,5 +1,7 @@
 # microblaze simulator testsuite
 
+sim_init
+
 if [istarget microblaze-*] {
     # all machines
     set all_machs "microblaze"
diff --git a/sim/testsuite/mips/basic.exp b/sim/testsuite/mips/basic.exp
index ff96a68..1509492 100644
--- a/sim/testsuite/mips/basic.exp
+++ b/sim/testsuite/mips/basic.exp
@@ -1,5 +1,7 @@
 # MIPS simulator instruction tests
 
+sim_init
+
 # Do "run_sim_test TESTFILE MODELS" for each combination of the
 # mf{lo,hi} -> mult/div/mt{lo,hi} hazard described in mips.igen.
 # Insert NOPS nops after the mflo or mfhi.
diff --git a/sim/testsuite/mn10300/allinsn.exp b/sim/testsuite/mn10300/allinsn.exp
index f8431e7..2eaf249 100644
--- a/sim/testsuite/mn10300/allinsn.exp
+++ b/sim/testsuite/mn10300/allinsn.exp
@@ -1,5 +1,7 @@
 # mn10300 simulator testsuite
 
+sim_init
+
 if [istarget mn10300-*] {
     # all machines
     set all_machs "mn10300"
diff --git a/sim/testsuite/moxie/allinsn.exp b/sim/testsuite/moxie/allinsn.exp
index 1a6af8b..d534085 100644
--- a/sim/testsuite/moxie/allinsn.exp
+++ b/sim/testsuite/moxie/allinsn.exp
@@ -1,5 +1,7 @@
 # moxie simulator testsuite
 
+sim_init
+
 if [istarget moxie-*] {
     # all machines
     set all_machs "moxie"
diff --git a/sim/testsuite/msp430/allinsn.exp b/sim/testsuite/msp430/allinsn.exp
index affa8ae..c7da3c5 100644
--- a/sim/testsuite/msp430/allinsn.exp
+++ b/sim/testsuite/msp430/allinsn.exp
@@ -1,5 +1,7 @@
 # msp430 simulator testsuite
 
+sim_init
+
 if [istarget msp430-*] {
     # all machines
     set all_machs "msp430"
diff --git a/sim/testsuite/or1k/alltests.exp b/sim/testsuite/or1k/alltests.exp
index 701cca6..6f4238d 100644
--- a/sim/testsuite/or1k/alltests.exp
+++ b/sim/testsuite/or1k/alltests.exp
@@ -15,6 +15,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+sim_init
+
 if [istarget or1k*-*-*] {
     set all_machs "or1k"
 
diff --git a/sim/testsuite/pru/allinsn.exp b/sim/testsuite/pru/allinsn.exp
index d147f73..b71a387 100644
--- a/sim/testsuite/pru/allinsn.exp
+++ b/sim/testsuite/pru/allinsn.exp
@@ -18,6 +18,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+sim_init
+
 if [istarget pru-*] {
     # all machines
     set all_machs "pru"
diff --git a/sim/testsuite/riscv/allinsn.exp b/sim/testsuite/riscv/allinsn.exp
index 03bec1b..bdf9299 100644
--- a/sim/testsuite/riscv/allinsn.exp
+++ b/sim/testsuite/riscv/allinsn.exp
@@ -1,5 +1,7 @@
 # RISC-V simulator testsuite.
 
+sim_init
+
 if [istarget riscv*-*] {
     # all machines
     set all_machs "riscv"
diff --git a/sim/testsuite/sh/allinsn.exp b/sim/testsuite/sh/allinsn.exp
index 05a28e0..ceed950 100644
--- a/sim/testsuite/sh/allinsn.exp
+++ b/sim/testsuite/sh/allinsn.exp
@@ -1,5 +1,7 @@
 # sh tests
 
+sim_init
+
 set all_machs "sh shdsp"
 
 global ASFLAGS_FOR_TARGET
diff --git a/sim/testsuite/v850/allinsns.exp b/sim/testsuite/v850/allinsns.exp
index 2dc8d60..c4c15b0 100644
--- a/sim/testsuite/v850/allinsns.exp
+++ b/sim/testsuite/v850/allinsns.exp
@@ -1,5 +1,7 @@
 # v850 simulator testsuite.
 
+sim_init
+
 if [istarget v850*-*] {
     # All machines.
     # Should add more cpus if the testsuite adds coverage for their insns, but